Massachusetts Department of Education. Horace Mann Centennial: 1837-1937, Suggestions for Suitable Commemoration by the Schools of Massachusetts of the One Hundredth Anniversary of the Establishment of the Board of Education in Massachusetts, and the Election of Horace Mann as its First Secretary. Boston, MA: Walter A. Smith Company, 1937. Google eBook, http://books.google.com/books/about/Horace_Mann_Centennial.html?id=cDZCAAAAIAAJ.